Frontier's UpFront Plus seats guarantee an empty middle seat for added comfort.
Early morning flights have a better chance of on-time departure and arrival.
$79+ Cheap flights from San Francisco to Denver (SFO - DEN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEN
Aug 2 — Aug 91
1 adult, Economy
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Find cheap flights from San Francisco to Denver with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from San Francisco to Denver Intl are usually found in January or October, booked 52 days in advance, depart on a Saturday or Friday and return on a Friday
Cheap flight deals from San Francisco to Denver
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 28, 2025.
Round-trip from | $153 (Frontier) |
|---|---|
One-way from | $79 (United Airlines) |
Popular in | June |
Cheapest in | January |
Average price | $257 |
Good round-trip deal | $211 or less |
Good one-way deal | $131 or less |
Find flight deals from San Francisco to Denver
Cheapest flights from San Francisco to DenverExplore the most affordable flight options available from San Francisco to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.
Explore the most affordable flight options available from San Francisco to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.
This Frontier deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/146:37 amSFO - DEN
Nonstop2h 40mFrontier
Wed 9/38:45 pmDEN - SFO
Nonstop2h 48mFrontier
Deal found 7/27![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1011:30 amSFO - DEN
1 stop7h 57mHawaiian Airlines
Wed 9/178:00 amDEN - SFO
1 stop6h 44mHawaiian Airlines
Deal found 7/27![Hawaiian Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/196:50 amSFO - DEN
Nonstop2h 40mMultiple Airlines
Fri 9/511:40 amDEN - SFO
1 stop5h 44mMultiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$164
This Southwest deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/187:45 pmSFO - DEN
Nonstop2h 25mSouthwest
Wed 8/2010:30 amDEN - SFO
1 stop6h 25mSouthwest
Deal found 7/26![Southwest logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/168:00 amSFO - DEN
1 stop8h 21mAlaska Airlines
Wed 9/248:00 amDEN - SFO
1 stop8h 52mAlaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$176
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/235:50 amSFO - DEN
1 stop4h 40mAmerican Airlines
Wed 9/33:07 pmDEN - SFO
1 stop5h 22mAmerican Airlines
Deal found 7/27![American Airlines logo]()
$202
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 28, 2025.
Use the filters below to find and compare flights from San Francisco to Denver that are best for you.
Fly from
San Francisco
Fly to
Denver
Route
Depart
Return
Price
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Thu 8/14
6:37 am-10:17 am
Nonstop2h 40m
Denver Intl
Wed 9/3
8:45 pm-10:33 pm
Nonstop2h 48m
$153
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Tue 9/9
2:42 pm-10:02 pm
1 stop6h 20m
Denver Intl
Tue 9/16
8:00 am-3:52 pm
1 stop8h 52m
$160
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Tue 8/19
6:50 am-10:30 am
Nonstop2h 40m
Denver Intl
Fri 9/5
11:40 am-4:24 pm
1 stop5h 44m
$164
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Mon 8/18
7:45 pm-11:10 pm
Nonstop2h 25m
Denver Intl
Wed 8/20
10:30 am-3:55 pm
1 stop6h 25m
$167
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Tue 9/16
6:00 am-2:06 pm
1 stop7h 06m
Denver Intl
Tue 9/23
8:00 am-3:52 pm
1 stop8h 52m
$176
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Sat 8/23
3:21 pm-10:05 pm
1 stop5h 44m
Denver Intl
Sat 8/30
11:59 am-6:54 pm
1 stop7h 55m
$202
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Sat 11/8
9:00 pm-12:35 am
Nonstop2h 35m
$79
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Sun 8/17
6:37 am-10:17 am
Nonstop2h 40m
$82
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Sat 12/6
11:30 am-6:03 pm
1 stop5h 33m
$87
San FranciscoDenver
SFO - DEN
SFODEN
San Francisco
Tue 12/2
4:30 pm-10:55 pm
1 stop5h 25m
$89
Showing 1-10 of 12 results
The best insider tips for San Francisco to Denver flights
Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to Denver trip
Airlines
![Frontier]()
Frontier
![United Airlines]()
United Airlines
Basic Economy allows a personal item only; no carry-on bags unless you're a MileagePlus member.
Economy Plus offers extra legroom seats at the front of the economy cabin for MileagePlus members.
Airports
Our travel experts
Best time to book a flight from San Francisco to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Denver
How far ahead should I book a flight from San Francisco to Denver?
Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Denver. Price data was last updated on July 25, 2025.
To ensure you get the cheapest price possible for a flight from San Francisco to Denver, you should look to book at least 52 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from San Francisco to Denver?
Currently, October is the cheapest month in which you can book a flight from San Francisco to Denver (average of $197). Flying from San Francisco to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SFO to DEN?
Find hourly flight availability from San Francisco to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2025.
One of the essential ways to save on airfare from San Francisco to Denver is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 28% on airfare.
What is the cheapest day to fly from San Francisco to Denver?
Use this chart to determine the cheapest time to fly round-trip from San Francisco to Denver. Price data was last updated on July 27, 2025.
Travelers seeking maximum savings on their San Francisco to Denver flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from San Francisco to Denver
Explore weekly flight availability from San Francisco to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 28, 2025.
The most flights from SFO to DEN are scheduled on a Sunday (57 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (26 on average).
How much does it cost to fly round-trip from San Francisco to Denver?
Reviews of airlines servicing Denver
Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated July 28, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from San Francisco to Denver by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Entertainment
7.1
Boarding
8.1
Comfort
7.8
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Crew
8.5
Entertainment
7.1
Boarding
8.1
Comfort
7.8
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Crew
8.5
Entertainment
7.1
Boarding
8.1
Comfort
7.8
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Crew
8.5
Entertainment
7.1
Boarding
8.1
Comfort
7.8
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Crew
8.5
Entertainment
7.1
Boarding
8.1
Comfort
7.8
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Crew
8.5
Entertainment
7.1
Boarding
8.1
Comfort
7.8
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsWestminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Brighton
Silverthorne
Golden
Thornton
Greeley
Frisco
Grand Lake
Manitou Springs
Central City
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Longmont
Broomfield
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for San Francisco to Denver
See prices for flight routes from nearby airports that may be better suited for you.
Top 7 airlines flying from San Francisco to Denver
Discover the top 7 airlines that operate flights from San Francisco to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 28, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$61 | Average$170 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$88 | Average$100 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$116 | Average$320 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$157 | Average$276 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$159 | Average$336 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$176 | Average$319 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$196 | Average$266 | FlexibilityNo cancel fee | On-timeN/A |